Harness-motion for looms.



No 802,659. I PATENTED OUT. 24, 1905. I

C. F. ROPER.

HARNESS MOTION FOR LOOMS.

APPLICATION FILED MAR.15, 1905.

ITED STATES PATENT OFFIC.

DRAPER COMPANY, OF HOPEDALE,

TION OF MAINE.

MASSACHUSETTS, A CORPORA- l-IARN ESS-MOTION FOR LOOIVIS.

I Specification of Letters Patent.

Patented Oct. 24, 1905.

Application filed March 15,1905. Serial No. 250,136-

To (1, whom it may concern.-

Be it known that I, CHARLns F. Borne, a citi zen of the United States, residing at Hopedale, county of WVorcester, State of Massachusetts, have invented an Improvement in Harness-Motions for Looms, of which the following description, in connection with the accompanying drawings, is a specification, like numerals on the drawings representing like parts.

This invention relates to harness-motions for looms; and it has for its object the production of simple, eflicient, and positively-acting means to effect the reciprocation in both directions of the harness or heddle frames without the use of straps, bands, or other similar flexible connections. The actuation of the harness-frames is effected by means located prin' cipally above the frames and external to the loom side, leaving an unobstructed space beneath the harness-frames.

My invention is particularly applicable to plain or two-harness looms and gives a smooth positive motion to the harness-frames with very simple and durable mechanism.

The various novel features of my invention will be fully described in the subjoined specification and particularly pointed out in the following claims.

Figure 1 is a front elevation, centrally broken out, of a harness-motion embodying my present invention, a suflicient portion of the loom to be understood being illustrated in connection therewith. Fig. 2 is a righthand side elevation of the actuator and the cooperating portions of the transmitting means intermediate the actuator and the harness-frames. Fig. 3is a detail in front elevation, showing the actuator and cooperating transmitters in the extreme opposite position from that shown in Fig. 1; and Fig. 1 is a perspective view of the actuator detached.

In Fig. 1 I have shown each of the two barness-frames as consisting of a cross-bar 1 and two suitably-attached side bars 2, the former being adapted to support a series of heddles 3 of well-known construction, the side bars be ing vertically slidable in vertical guides 1, se cured to or forming a part of brackets 5, mounted on the loom-frame. The guides I maintain the harness-frames in their proper vertical paths as they are reciprocated oppo' sitely by means to be described.

In Figs. 1 and 2 the front harness-frame is depressed and the rear frame elevated.

The upper ends of the side bars 2 of each harness-frame are connected by links 6 and 7 with the transmitting means to be described, and, as shown in Fig. l, the opposed faces of the links and side bars are transversely corrugated at 8 and held together by bolts 9, passed through slots 10 in the links. By means of the slots the links can be adjusted and the corrugated faces hold the adjacent parts firmly together when the bolts are set up. The links connect each harness-frame with a pair of bent levers or bell-cranks 11 12, the levers 11 being herein shown mounted side by side to rock on a fixed fulcrum 13 on the arch 14C of the loom, while the levers 12, which I have hereinafter termed transmitters, are mounted side by, side to rock on a fixed fulcrum 15 on the arch. Each pair of levers 11 12 is connected by a link 16 (see Fig. 1) to rock in unison in the same direction to thereby raise or lower the connected harness-frame. The levers or transmitters 12 are each provided with a two-part cam-follower, herein shown as two arms 17 18, extending on opposite sides of its fulcrum, and provided with rolls 17 18 respectively.

The pairs of levers mounted and connected as described and the construction of each lever or transmitter 12 may be and are all substantially as shown and described in United States Patent N o. 7 7 0,116, granted to me September13,1901,to which reference may be had.

I have provided a common oscillating actuator to cooperate positively with the two transmitters and effect rocking movement thereof in opposite directions to thereby cause the vertical and opposite reciprocation of the two harness-frames. The actuator is made as a casting having a hub 19, two cams 20 21, extended oppositely from each other, and a third cam 22, projecting from the hub substantially at right angles to the other two cams and laterally ofi'set therefrom, as shown in Figs. 2 and 4. The actuator is mounted to oscillate on a fulcrum-stud 23, fixed on a bracket 24, secured to the side of the arch 1A, (see Fig. 1,) the stud being parallel to the fulcra 13 and 15, the cams on the actuator being so located that the cam 22 is interposed between and cooperates with the two follower-rolls 17 18 of the front transmitter, while the cams 20 and 21 cooperate, respectively, with the similar rolls on the rear transmitter.

When the actuator is in the position shown in Fig. 1, the high part of cam 22 acts upon the front transmitter roll 18 to elevate it, and thereby position the transmitter to depress the front harness-frame, the corresponding roll 17 then cooperating with the low part of cam 22. At the same time thehigh point of cam 20 is then acting on roll 17 of the rear transmitter to elevate said roll and position the transmitter to raise the rear harness-frame, as will be manifest, the roll 18 of the rear transmitter then cooperating with the low part 2O between the cams 20 and 21. WVhen the parts are in this position, it will be seen that the two harness-frames are practically locked in their extreme positions.

Referring now to Fig. 3,the actuator is shown in the opposite position, and at such time the high part of cam 22 has acted through the front transmitter-roll 17 to rock its transmitter into the position shown to elevate the front harness-frame. At the same time the cam 21 has acted to elevate the roll l8 of the rear transmitter, rocking the latter into position to depress the rear harness-frame, while the corresponding roll 17 X is on the low part 20 The front transmitter-roll 18 is then on the low part of the cam 22, and the front and rear harness-frames are held locked in raised and depressed positions, respectively.

It will be understood that the oscillation of the actuator from one to the other of its extreme positions operates through the two sets of cams to rock the two transmitters positively and in opposite directions.

The actuator may be oscillated by any suitable means, and herein I have employed substantially the means shown in United States Patent No. 7 37,149, granted to me on August 25, 1903. To this end the shaft 25, extended through the loom side, has fast upon it a crank 26, Fig. 1, provided witha radiallyadjustable wrist-pin 27, on which is loosely mounted a sleeve 28, to which is pivotally connected at 29 the lower end of a link 30. A species of universal joint is thus provided between the link and the crank-pin, and the upper end of the link is pivoted at 31 to a coupling-link 32, pivoted at 33 on an extension 21 of the cam 21 of the actuator. The link 30 is thus connected with the latter in such a manner as to oscillate the same by or through rotation of the shaft 25.

By adjusting the wrist-pin 27 on the crank the throw of the link 30 will be regulated as desired.

Inasmuch as the rear harness-frame has to rise a little higher and descend a little lower than the front harness-frame, the cams 2O 21 are shaped to give such increased movement to the transmitter cooperating therewith and operatively connected with the rear harnessframe.

My invention is not restricted to the precise details of construction and arrangement herein shown and described nor to any particular form of means for effecting the oscillating movement of the actuator, as various changes or modifications may be made by those skilled in the art without departing from the spirit and scope of my invention.

Having described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a loom, in combination, two oppositely-movable harness-frames, a pair of connected levers operatively connected with each frame, an oscillating actuator positively cooperating with one of the levers of each pair, and means to oscillate the actuator and thereby efiect reciprocation of the harness-frames.

2. In a loom, in combination, two oppositely movable harness frames, a rocking transmitter operatively connected with each frame, an oscillating actuator positively cooperating with the two transmitters, and means to oscillate the actuator and thereby effect reciprocation of the harness-frames.

3. In a loom, in combination, two oppositely-movable harness-frames, two rocking transmitters mounted side by side, suitable connections between each transmitter and one of the harness-frames, an oscillating actuator positively cooperating with and common to both transmitters, and means to oscillate the actuator and thereby eifect the reciprocation of the harness-frames.

4. In a harness-motion for looms, two oppositely-movable and independent harnessframes, two rocking transmitters, a positive connection between each transmitter and one of the harness-frames, to reciprocate the latter, an oscillating actuator common to and cooperating with the transmitters, and means to oscillate said actuator.

5. In a harness-motion for looms, in combination, two harness-frames, fixed guides for each, two rocking transmitters, a fixed fulcrum therefor and on which they are mounted side by side, a positive connection between each transmitter and one of the harness-frames, an oscillating actuator common to and cooperating with said transmitters, to rock the same oppositely, and means to oscillate said actuator.

6. In a harness-motion for looms, in combination, two oppositely-movable harnessframes, a rocking transmitter positively connected with each harness-frame, an actuator having cams to cooperate with the two transmitters, to rock the same positively and opp ositely, and means to oscillate said actuator.

7. In a harness-motion for looms, in combination, two oppositely-movable harnessframes, a rocking transmitter positively connected with each harness-frame, each transmitter having a two-part follower, a common actuator for the transmitters, having cams to cooperate respectively with the followers of the transmitters, and means to oscillate the actuator to effect positive and opposite rocking of the transmitters.

8. In a harness-motion for looms, in combination, two oppositely movable harnesslrames, an oscillating actuator, means to ,oscillate it, and transmitting means between said actuator and each harness frame, including a rocking member operatively and positively cooperating with the actuator, and a fixed fulcrum on which said rocking mem bers are mounted side by side.

9. In a harness-motion for looms, in combination, two oppositely-movable harnessframes, a rocking transmitter positively connected with each harness-frame, each transmitter having a bifurcated extension provided with followerrolls, a common actuator having cams to cooperate with the-follower-rolls of the two transmitters, to rock the latter oppositely, and means to oscillate the actuator.

10. In a harness-motion for looms, in combination, two oppositely-movable harnessframes, two pairs of connected bent levers,

CHARLES F. ROPER. Witnesses GEORGE O'rrs DRAPER, ERNEST W. WOOD. 

